Spontaneity






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Chase Yonamine 1J
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Joined: Fri Sep 28, 2018 12:17 am

Spontaneity

Postby Chase Yonamine 1J » Fri Feb 22, 2019 10:21 am

How does Gibbs free energy relate to spontaneity and stability of a reaction?

Kyle Golden Dis 2G
Posts: 67
Joined: Fri Sep 28, 2018 12:17 am

Re: Spontaneity

Postby Kyle Golden Dis 2G » Fri Feb 22, 2019 10:27 am

When delta G is negative, the forward reaction is spontaneous and the products are more stable.

Griffin Carter 2I
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Joined: Wed Nov 14, 2018 12:23 am

Re: Spontaneity

Postby Griffin Carter 2I » Fri Feb 22, 2019 11:35 am

Gibbs free energy is the measurement of the maximum reversible work that can be done by a system so a negative GFE change means the system performs work or loses that energy to the surroundings which makes it spontaneous. If the GFE is positive then the forward reaction will not be spontaneous because more energy needs to be added to the system to achieve whatever process is occurring.

Jasmine Chow 1F
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Joined: Fri Sep 28, 2018 12:16 am
Been upvoted: 1 time

Re: Spontaneity

Postby Jasmine Chow 1F » Fri Feb 22, 2019 8:21 pm

Gabs free energy is the same thing as the amount of work a system can do. Therefore when gabs free energy us negative it is spontaneous as the system is doing work.

Madeline Motamedi 4I
Posts: 62
Joined: Fri Sep 28, 2018 12:23 am

Re: Spontaneity

Postby Madeline Motamedi 4I » Sun Feb 24, 2019 3:02 am

A reaction that absorbs heat and decreases entropy results in a positive delta G which is not favorable and thus not spontaneous. If the reactants have more free energy than the products do, then you have a negative delta G. This is a favorable situation which is why it is considered spontaneous.

Nandhini_2K
Posts: 60
Joined: Fri Apr 06, 2018 11:03 am

Re: Spontaneity

Postby Nandhini_2K » Sun Feb 24, 2019 3:15 am

When delta G is negative the product is favored and spontaneous in forward rxn. When delta G is positive reactants are favored and non spontaneous in forward rxn and spontaneous in reverse rxn.

Destiny Diaz 4D
Posts: 51
Joined: Fri Sep 28, 2018 12:28 am

Re: Spontaneity

Postby Destiny Diaz 4D » Tue Mar 05, 2019 7:19 pm

I am not sure if this chart is helpful to you but here it is just in case
WIN_20190305_19_18_42_Pro.jpg


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